RIO DE JANEIRO, BRAZIL - Rio de Janeiro could suffer a major water supply crisis, due to the increasing environmental degradation of Guanabara, Sepetiba and Ilha Grande bays, in addition to the pile of chemical waste on the banks of the Paraíba do Sul River.
Pollution, caused by the lack of basic sanitation, affects the bays and 100 coastal lagoons of the Rio de Janeiro state coast. The majority of the rivers which supply water to the cities are already polluted.
The Paraíba do Sul river, which supplies 80 percent of the metropolitan region of Rio de Janeiro, is . . .